162123444 has 60 divisors (see below), whose sum is σ = 484375584. Its totient is φ = 46320336.

The previous prime is 162123443. The next prime is 162123487. The reversal of 162123444 is 444321261.

It is a happy number.

162123444 is a `hidden beast` number, since 1 + 6 + 212 + 3 + 444 = 666.

It is a super-2 number, since 2×162123444² = 52568022188842272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162123443) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33474 + ... + 38009.

Almost surely, 2^162123444 is an apocalyptic number.

162123444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

162123444 is an abundant number, since it is smaller than the sum of its proper divisors (322252140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

162123444 is a wasteful number, since it uses less digits than its factorization.

162123444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71506 (or 71495 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 162123444 is about 12732.7704762161. The cubic root of 162123444 is about 545.2746072837.

The spelling of 162123444 in words is "one hundred sixty-two million, one hundred twenty-three thousand, four hundred forty-four".